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<blockquote class="extDef">NOTE&nbsp; Definition according to ISO/CD 10303-42:1992<br>
A face bound is a loop which is intended to be used for bounding a face. </blockquote> 

<blockquote class="note">NOTE&nbsp; Entity adapted from <strong>face_bound</strong> defined in ISO 10303-42.</blockquote>
<blockquote class="history">HISTORY&nbsp; New entity in IFC1.0</blockquote> 